2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53999The Weinberg-Tucker-Hammer equations are shown to substitute the common-used $j=1$ massless equations. Meantime, the old equations preserve their significance as a particular case. Possible consequences are discussed.LaTeX file, 6pp. Preprint EFUAZ FT-94-09High Energy Physics - Theorytext